Phonic disruptor
From Tardis Wiki, the free Doctor Who reference
Mrs Wormwood had a sonic disruptor to fight of the Bane, it was in the form of a ring. She used this also on Gita Chandra to put her in a trance. It only stunned the Bane but i gave her enough time to escape. [[ Mr Smith]] contained her in a containment vortex and that drained her sonic disrupter.
File:Mrs Wormwood.jpg
Mrs Wormwood had a sonic disrupter (SJA: Invasion of the Bane)